EP0632223B1 - Tube métallique en cuivre avec un revêtement de matière plastique - Google Patents

Tube métallique en cuivre avec un revêtement de matière plastique Download PDF

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Publication number
EP0632223B1
EP0632223B1 EP94107757A EP94107757A EP0632223B1 EP 0632223 B1 EP0632223 B1 EP 0632223B1 EP 94107757 A EP94107757 A EP 94107757A EP 94107757 A EP94107757 A EP 94107757A EP 0632223 B1 EP0632223 B1 EP 0632223B1
Authority
EP
European Patent Office
Prior art keywords
pipe
plastic
copper pipe
encased
casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94107757A
Other languages
German (de)
English (en)
Other versions
EP0632223A1 (fr
Inventor
Franz-Josef Hackmann
Günter Heller
Karl-Heinz Warhus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KM Europa Metal AG
Original Assignee
KM Europa Metal AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KM Europa Metal AG filed Critical KM Europa Metal AG
Publication of EP0632223A1 publication Critical patent/EP0632223A1/fr
Application granted granted Critical
Publication of EP0632223B1 publication Critical patent/EP0632223B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/003—Multiple wall conduits, e.g. for leak detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/283—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes for double-walled pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

Definitions

  • the invention relates to a plastic-coated copper pipe for use as a safety tube for ground collectors in heat pump systems, the Plastic jacket running in the longitudinal direction of the tube, projecting inwards and has webs supported on the pipe surface.
  • So-called safety pipes are already used in heat exchangers known, which consists of a metallic inner tube and a around this coaxial metal outer tube exist.
  • the possibly Annular gap between the two tubes interrupted by spacer ribs is used for example via sensors arranged in the coil Detection of any leaks in the inner tube or to collect the leaked liquid.
  • Such pipes are pulled together Made on drawing benches and therefore have only a limited number Length.
  • Their use as a ground collector is still disadvantageous poor bendability as well as the need for the metallic surface of the outer tube due to a coating against corrosion in the ground protect.
  • plastic-coated copper pipes are also known, which as heat-insulated supply lines for radiators or as coils can be used for underfloor heating.
  • the tube jacket extruded onto the tube preferably consists of a soft polyvinyl chloride, which has a low strength and thus not suitable for the requirements of a safety tube for one Soil collector to be put.
  • a copper tube and a heat-insulating composite pipe consisting of a plastic jacket is known, whose plastic sheath extending in the longitudinal direction of the copper tube, after has webs projecting on the inside and supported on the pipe surface.
  • the jacket consists of a foamed plastic mixture of relatively low density.
  • the object of the present invention based on an inexpensive plastic-coated copper pipe for To provide the one in the longitudinal direction of the tube Has leakage gap and otherwise the requirements for laid in the ground Collectors are enough.
  • a jacket made of a thermoplastic is placed on the inner tube made of copper High density plastic extruded with an internal pressure of withstands about 10 bar. Accordingly, with a web height of a maximum of 4 mm, preferably 1.5 mm, the outer diameter of the jacket at least by Factor 1.2 larger than the outer diameter of the inner tube.
  • the web distance of the plastic jacket on the pipe surface becomes advantageous in the area chosen from 3 to 10 mm so that the jacket has a surface that is as circular as possible having.
  • Such a safety tube can be inexpensive manufacture in relatively large lengths and fulfills the strict requirements that are highly hazardous to water during transport Liquids are put. It can be big Lengths can be laid as a pipe coil with good flexibility.
  • the plastic web jacket made of PE-HD with particular advantage maintains internal pressure if the inner tube leaks easily stood and also has high corrosion resistance in the ground. Which is on the pipe surface have supporting webs of the plastic jacket preferably a tapering cross-section.
  • Safety pipe for ground collectors based on a figure explained in more detail.
  • the figure shows the cross section of an embodiment according to the invention.
  • the safety tube labeled 1 consists of a seamless drawn metallic inner tube 2 made of SF-Cu with a Outside diameter of 15 mm and a wall thickness of 0.9 mm and an outer tube 3, which is conveniently by Extrusion is applied.
  • the outer tube 3 with an outer diameter of 22 mm has on the inside six webs 4 of almost triangular design running in the longitudinal direction of the tube.
  • the web height h of the jacket is approximately 1.5 mm, the web spacing t is 7.85 mm.
  • a plastic with a minimum yield stress of 20 N / mm 2 measured at 23 ° C. and 50% atmospheric humidity, can preferably be used as the material for the outer tube.
  • Plastics from the PE-HD group which are available on the market under the name Hostalen GM 5010 T2, are particularly suitable.
  • the plastic-coated copper pipe is depending on the outside diameter manufactured in coils of 50 m or 75 m in length and can be easily installed in the ground to form coils be directly in the inner tube 2 from the heat absorbing Refrigerant flow.
  • the refrigerant through the webs 4th formed annular space 5 are collected.
  • the sensors arranged at the end of the coil then become the leak displayed, so measures for damage reduction can be initiated.
  • the annular space 5 can also filled with an environmentally safe brine as a heat transfer medium be to the heat transfer between the ground and to improve the refrigerant even further.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (5)

  1. Tube de cuivre muni d'une gaine de matière plastique pour l'utilisation comme tube de sécurité pour des collecteurs dans la terre dans des installations de thermopompes, dont l'enveloppe en matière plastique (3) comporte des nervures (4) se développant dans le sens longitudinal du tube (2), en saillie vers l'intérieur et s'appuyant sur la surface du tube,
    caractérisé en ce que
    l'enveloppe (3) se compose d'une matière thermoplastique de densité élevée,
    la distance (t) des nervures (4) sur la surface du tube se situe dans l'intervalle de 3 à 10 mm,
    la hauteur maximale (h) des nervures se monte à 4 mm,
    l'espace intérieur (5) entre tube (2) et enveloppe (3) est rempli par un liquide non polluant.
  2. Tube de cuivre muni d'une gaine de matière plastique selon la revendication 1,
    caractérisé en ce que
    le diamètre extérieur (D) de l'enveloppe (3) est plus grand d'au moins le facteur (1, 2) que le diamètre extérieur (d) du tube (2).
  3. Tube de cuivre muni d'une gaine de matière plastique selon les revendications 1 ou 2,
    caractérisé en ce que
    les nervures (4) ont en direction de la surface du tube une section s'amincissant.
  4. Tube de cuivre muni d'une gaine de matière plastique selon la revendication 4,
    caractérisé en ce que
    la section transversale des nervures (4) est triangulaire.
  5. Tube de cuivre muni d'une gaine en matière plastique selon la revendication 1,
    caractérisé en ce que
    la gaine (3) se compose de polyéthylène dur, du groupe PE-HD.
EP94107757A 1993-06-01 1994-05-19 Tube métallique en cuivre avec un revêtement de matière plastique Expired - Lifetime EP0632223B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9308202U DE9308202U1 (de) 1993-06-01 1993-06-01 Kunststoffummanteltes Kupferrohr
DE9308202U 1993-06-01

Publications (2)

Publication Number Publication Date
EP0632223A1 EP0632223A1 (fr) 1995-01-04
EP0632223B1 true EP0632223B1 (fr) 1998-07-15

Family

ID=6893911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94107757A Expired - Lifetime EP0632223B1 (fr) 1993-06-01 1994-05-19 Tube métallique en cuivre avec un revêtement de matière plastique

Country Status (3)

Country Link
EP (1) EP0632223B1 (fr)
AT (1) ATE168456T1 (fr)
DE (2) DE9308202U1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4001389B2 (ja) * 1996-10-11 2007-10-31 トム リチャーズ インコーポレイテッド ディービーエイ プロセス テクノロジー 接地されたパージ式液没ヒータ
GB2325292A (en) * 1997-05-13 1998-11-18 Foster Wheeler Energy Ltd Hot water heat tracing pipe
EP1036975A1 (fr) 1999-03-18 2000-09-20 Boliden Cuivre & Zinc S.A. Tuyau de cuivre pourvu d'une gaine de resine stabilisée
GB2377979B (en) * 2001-07-24 2005-06-15 Petrotechnik Ltd Improved pipe
DE102005053364B4 (de) * 2005-11-07 2007-07-05 Gunter Behlendorf Erdwärmetauscher und Anordnung aus Erdwärmetauschern
WO2008009289A1 (fr) * 2006-07-20 2008-01-24 Poul Svendsen Module d'échange de chaleur, en particulier pour une pompe à chaleur géothermique
DE202007017371U1 (de) * 2007-12-11 2009-04-16 Rehau Ag + Co Erdwärmesonde aus vernetztem Polymermaterial
SE537413C2 (sv) 2012-12-06 2015-04-21 Triopipe Geotherm Ab Koaxial borrhålsvärmeväxlare samt förfarande för framställning därav
US11255614B2 (en) * 2019-07-29 2022-02-22 Hamilton Sundstrand Corporation Heat exchanger with barrier passages

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE562069A (fr) * 1957-10-24 1960-05-20
FR1240034A (fr) * 1959-07-22 1960-09-02 Tube gainé et thermiquement isolé, notamment pour les canalisations d'eau domestiques
DE1675338A1 (de) * 1968-02-24 1971-01-21 Kabel Metallwerke Ghh Leitungsrohr fuer den Transport von Fluessigkeiten und Gasen
DE2310898C3 (de) * 1973-03-05 1983-01-05 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Wärmeisolierende Hülle für Leitungsrohre
DE2461013C3 (de) * 1974-12-21 1982-01-07 Wieland-Werke Ag, 7900 Ulm Aus einem Metallrohr und einem Kunststoffmantel bestehendes wärmeisoliertes Verbundrohr
DE2735957A1 (de) * 1977-08-10 1979-02-22 Kabel Metallwerke Ghh Kunststoffummanteltes kupferrohr

Also Published As

Publication number Publication date
ATE168456T1 (de) 1998-08-15
EP0632223A1 (fr) 1995-01-04
DE9308202U1 (de) 1993-07-15
DE59406439D1 (de) 1998-08-20

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